Water-heater gas burner



April 17, 1928. l 1,666,094

R. c. HoYT WATER 11611611 GAS BURNER Filed Nov. 25, 192,5

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' ROBERT Patented Apr. iai-,1928.

wfncrma HEATER Gas Brianna. l i Y applicati@ meaiiovemtenaa 1925. l seriai No. 711,529- l invention relates to'gas :burners for water heaters, and it has special i reference Ito yburners adapted to be usedin connection .with automatic water heaters -lnwhlch the water circulates through a unit of heating Inv such Lheaters considerable difficulty has,

l. j hitherto often` been experienced in the light,-

inglofl-:the lburner fromthe flame of the Q pilot light, 'whieh in Lmany instancesis eX- ytinguishedv by draft, orby the falling` thereonff'of water drops formed byfcondensation lonltheVoutsideuofV the heating coils,- or'by,` .Y the ash of the yproducts of combustion, which Y ashes tend to collect on the coils and aboutA the fpilot light tip. f Also, if 'the pilot light -is4 atk some distance lfromhthe* burner, suficientv time may Aelapse before .the gas from i the burner reaches 'the flame of the pilot light,v sol that, should it happen that air has been Vmixed in proper proportion withI the v gas thatfllsthe heater shell, a verydangerous explosion --may be caused thereby.

, y Furthermore, in such heatersthat I am,

familiar with; water, drip and ash have been are unchecked. as they fall upon the burner and thepilot light vand continue on their l Myzinvention has for animportantobject ,heateri eitherr asa result' of the falling of i ash or the falling of drops of condensationv Vthereon; .Another object is to'- lead the residue of` 'the products of combustion and the products i Y Vof condensation, which may fall and` collect upon theburner and the 'pilotlight, to'a.

Another Object of-'Y-great'impor-tance `is tov t provide .the burnerwltha tip and arrange it in vsuchfa. manner with the. pilot light l tip sothat instantaneous ignition will result,"anjd thus yovercome Ithe heretofore dan-l y inainburner -is ignited. Y., l

giyengnospecial attention and consequently i Vv'way 'clown to the floor belowthe heater, 'where they: soon form'/ an y,object-ional wetVV mass which discolors the'y oor and otherwisej causes annoyance to theoperator or house-. l-.`keeper. e

to Veliminate,all. liability to, extinguishment of the Vpilot light, in an automatic water? gerous gap of time beforezthe gas from :the-

A further., object is to arrange'.-theiburner;y and thepilot light in `anjautomatic water-, heater soV that the flame can not' beeXt-in-f www i cQHoYr; or l0AKnaur; ca-iiironrira;` AssIGNoR Tol Hoym :HEATER courent-ff". f or Los ANGELES, caniroaman ooaromir'roii or CALIFORNIA, ,t Q* ,L

guished by back' draft. through; the;V heater i or byn other causes, and so'that afheaterg."l

:equipped with a burner arrangementof ifny: inventionwill require onlyal minimum`.-,o`f f attention and 'be practically Very safe ,in the! .hands of unskilled persons suchas indwellings wherey it primarily isV designed, forxinn.

Other yobjects and" advantages of: my inf., Vention will appear from the following de-f stallation..V

tailed vdescription of the same 4taken in con# nection Vwith the accompanying*fdrawings, )but lit should; be understood that. the' de-1 scription and the drawingsreferonly tov a preferred .embodimentlfof my"invention, may-be ,applied in r i;

and that the invention Various other modifications which come une? den they.. interpretation .fof` the appe'ndedfv claims following this specification, andk withrout departing from thejspirit of the .inven-f'f tion. y

Inthe drawingsi the pilot light;`

cludesf the ,lower part showing therv arrangement of; the pilot'flight 'i Vtip andthe tips in Qthe burner,v thereof inAk Y secured,and the vwalls-on thejupfper parte' of'thebasevth-at.` l, protect t he7pilot lightjqfrom]thefelfectgoff'k f which the pilot light .tip 4isi draft f the tips lof' `the coils; and part of the y heater basev '.,ar 's mentally.

Referring a, the :drawing 5nd, figurslic i 4 rrvi. i' Y I i ki* ij. ,li-i "rl Viv "lfhev` numeral 6 in kthe,"preferred.ellbmi` V1 Vment ofmy invention indicatesabrner fOI' f Y an automatic Wa'teljheater and iticmplsesc i thereof;

isa sectional elevation-:through am. f part -of the. burnerand thepilotjlightgfexefv l' tension thereof and` 'shows the openings 'in-J pilot, lightr-an'd the burner, 'andi alsojthe beaded flange under. the roof'g at itsedges and'that leads the drops -ofco-n' densationA to the collection chamberV below-fl the burner. ,.Thejacket ofy the v.heate ,r,watei', n

pilot lighthOuSingaDd the'fupper@ 'own vrfragfI an upper, annular portion 7 and a lower portion 8, secured thereto in anyV approved manner as with bolts 9. l

The burner 6 has the usual annularly arranged tips 13`on its top, and adjacent there tois an extension V12 havinga pair of tips 14 with openings 15 therein communicating with the interior of the burner. These openings 15 are preferably smaller than the openings in the tips 13 in the annular portion 7. Between the two tips 14 is a third tip .16 provided with two openings 17 and 18 also communicating with the interior of the burner 6, the latter tip preferably being `of lava or 'some other non-oorroding and heatresisting'substance, and arranged to fit tightly ini'the burner so that `the opening 17 is directed virtually perpendicularly, while the opening 18 is slanting outwardly in the midsectional VVertical plane of the burner 6 and the :extension V12. The openings 17 and 18 are not required to be so large as the openings 15 inthe tip 14, a hole of a size made with 5a No. 'drill, U. S. drill standard, being sufficient to'form the opening 17, vand a hole'of -a size made with a No. 50 drill being sufficient to form the opening 18.

On the'und'erside of the extension 12 and outside of the tip 16 is formed a boss 20, adapted to VeXtend'th-rough an opening in the wall ofthe heater base 11. The boss 20 has centrally therein abore 22, which has threaded connection with a gas-inlet pipe (not shown), .but is non-communicative with the interior of the burner 6 Figpll. Coaxial with the bore 22 and in the said mid-sectional vertical plane of the burner 6 andthe extension 12, the extension vhas therein a smaller bore 211, communicating with the bore '22.' and adapted to receive therein la Vtight-fitting tip v25 of a substance similar to that of the tip`16.

In the tip 25 are, as in the tip 16,- two openings 26 and 27, which communicate with the bore 122'; and the openings are so arranged, andthe -ti-p should be so placed, in the borer24 that, while the' opening 26 is directed Vvirtually perpendicularly, the opening 27 is slanting inwardly in the said midsectional plane .of the burner 6 `and the -eX- tension v12. I prefer also to make these openings 26 and 27 smaller than the openings 17l and 18. in the tip 16, and I have found `in ymy vresearches that, if each of the openings 26 and 27vis as large as a hole made with a No. 56 ldrill, U. S. drill standard, the size Pis Vparticularly adapted for 4a satisfactory operation of the burner when Y f the -openings'in ythe tip 16 also are of the size previously specified.

The tip25., communicating with the bore I 22, which, as before stated, is connected with a'gas-sugpply fsouree, lnot shown, independently off-.the burner 6, thus comprises :the pilot .light for the burner. In .order to proytect this pilot light from draft the base 11 is providedwith inner wall-portions 28, one oneach side of the kextension 12 and an outer wall-portion 29. For further' protection of the pilot light, the top of the .extension 12,`

beyond the tipsv 111A and 16, is lower than the top of the extension at the tips 1e so that the tip or pilot light 25 also is below the tips 14 and 16. ByA this arrangement the burner 6 also serves a means for shielding the pilot light from draft sweeping over the burner toward the pilot light; f

Besides being lower than the top of the extension 12 atthe tips lei, the top of the eX- tension,'beyond the tips lll, forms a sloping roof 30, which is adapted t-ocause such drops of condensation and such ashes or unburned products of combustion as fall from the heating coils 31, shown fragmentally in Fig. 1, and are carried rby air cur-'1 rentsor otherwise to the extension 12,r vto slide past the pilot light. It hasalsoa vfur-kv ther purpose of checking down draftfron-i the'interiorof the heater and: therebypreventing it from extinguishing thepilot light, such draft taking the courseA aro-und the burner and inside of the hollow 'base 11 and finding -its outlet at the bottom offthebase.

Under the roof 30 the extension is provided with a beadedfflange 32, which follows f the' edge of the roof from its extremity and loo ward course, rpwill go through openings S3 *p formed at the bottom of the uppe-rportion 7, and lsuch products as take anoutward course, Vincluding'produc-ts falling on' the roof v30,'-will followfthe Iouter wafll Iof the upper portion 7. In either case, they g are collected, upon an annular 'flange' 34 integral with the lower portion 8. By -a peripheral bead 35 on the under-sideof theflange, which bead extends over `an anular collecting chamber 36 in the bottom oi' the base, such products are then yled into the chamber from l1,15 which by the heat from the burner the product-s of condensation are vaporized and @es cape upwardly' through the heater vent, not shown, while the unburned products of combustion collected in the chamber are easily removed therefrom. Y

It should vbeiobservedv that Eby` the arrangement of the pilot tip 25 and the tip 16 relative to each other and .to :the tips '14, -when the pilot vlight .is burning-and when the burner vali-ve, :not shown, is open, a `small stream of gas will be directed towards the fia-me of th'e-pi'lotlight fromthe open-ing 18, while another stream of gas will be direct-ed upwardly from the opening 17 Ybetween the '-130 streams of gas issuing fromthe tips 11i.

The gas issuing from the opening 18v Will thenbe ignited by the iame from the slantopening` 26 of the pilot21ight and' the gas.

` ing 'opening 27, or, if it should pass 'that' llianuev Without being ignited, it Will be ignited by the flame from the `perpendicular issuing from the tips 14- in its turn Will be Y ignited by the flame from the perpendicular opening 17 in thetip 16y and thus Vignite the Y gas issuing from the tips 13 lofthe burner,

iso that gas vcan notescape therethrough, the'.

thereby yeffecting aV sure l*ignition of the burner p6 instantaneously.

Y. If, on account of their vertical directifm, the openingsrl7 and 26 in the respective tips should become clogged by ash'orotherwise,

'- slanting of the openings V18vand 27 prevents to sonne' extent the ash or other products from entering the openingsy 18 and 27, and

l thereby assists in maintaining the 'burner in of time.

Patent` ofthe United States the following:

1. In a'water heater havinga base rovided with an annular chamber at the ottom thereof'for the collection ofproductsl of.

condensation and unburned products. of

combustion `from the heater, a burnercOH-g nected With'agas-supply source and secured Within saidbase, said burner having an an-v nular liange integral therewith and =pro' vided With a .peripheral beadon the underchamber.

y 2.v In a Water heater of the character described, av baserforming an annulary trough and a ,burner restingon the inner edge lthereof and having al'substantially closed outer Wall shaped to guide products of conden` sation into the base, theouter Wall of the .35 f side `oitY Vsaid flange extending over saidl base risingy alongside oi' and in spaced andr proximate relation to the Wall of the. burner so as to coinpletelyvsurround the saine.

In 'testimony whereof I aiix my signa- ROBERT c'.HoYTL) 

